Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Calculation procedure of Effective Lung Ventilation Area Ratio (ELVAR). List P were original images of lung windows from HRCT (Figure 2A). List R were segmentation results from List P (Figure 2J). List L were data of calculation results of List R in the algorithm program (Figure 2I). List I were data of lung interstitial enhancement of List R in the algorithm program (Figure 2K).
